Patent · US Active

Drill rod or adaptor with strengthened spigot coupling

US11162619B2 · kind B2 · utility

0Cited by

7References

17Claims

0Family size

Assignee

Sandvik Intellectual Property AB · SE

Inventors

Petri Ahola · Gävle, SE
David E. Wickstrom · Bloomington, US
Andreas Norman · Sandviken, SE

Key dates

Filing date	May 19, 2016
Grant date	Nov 2, 2021
Priority date	—
Expiry date	Jan 21, 2037

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B17/042
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

An elongate component, such as a drill rod or adaptor, forms part of a drill string having a shoulder contact male spigot coupling. The male spigot includes a non-threaded shank and a threaded section in which an axial length of the non-threaded shank is provided at a predetermined minimum relative to an outside diameter of the spigot at the threaded section.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.